Office chair



FIG. 1 is a perspective view of my new office chair;

FIG. 2 is a perspective view of my new office chair from a back opposite that of FIG. 1;

FIG. 3 is a front elevational view of my new office chair of FIG. 1;

FIG. 4 is a rear elevational view of my new office chair, opposite that of FIG. 3;

FIG. 5 is a side elevational view of my new office chair of FIG. 1;

FIG. 6 is a side elevational view of my new office chair from a side opposite that of FIG. 5;

FIG. 7 is a top view of my new office chair; and,

FIG. 8 is a bottom view of my new office chair. 

CLAIM The ornamental design for an office chair, as shown and described. 